Alert archive / Florida / Rip Current Statements in 2018

Rip Current Statement 34, NWS Miami, FL

October 21, 2018Broward County, Miami-Dade County, Palm Beach County, Florida

NWS Miami, FL issued this rip current statement at Oct 21, 2018, 4:00 PM EDT for Broward County, Miami-Dade County, Palm Beach County, Florida. It took effect at Oct 22, 2018, 6:00 AM EDT. It was in force for 62 hr.

The area

The counties it named.

The facts

Issued
Oct 21, 2018, 4:00 PM EDT (20:00 UTC)
In effect from
Oct 22, 2018, 6:00 AM EDT
Expired
Oct 24, 2018, 7:31 PM EDT
In force
62 hr
Issued by
NWS Miami, FL

Counties Broward County, FL, Miami-Dade County, FL, Palm Beach County, FL

The radar

The Miami radar (KAMX), 59 km from the middle of the area, began a volume at 20:01 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Miami, FL (KMFL), launched 12:00Z, 8.0 hours before the alert went out and 39 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Miami, FL at 12:00Z on 2018-10-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 390 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Miami, FL at 12:00Z on 2018-10-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -28 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
390 J/kg
Mixed-layer CIN
-20 J/kg
Mixed-layer LCL
790 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
-28 m²/s²
0-3 km storm-relative helicity
53 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.2

Open this sounding in Storm Lab

The text

As transmitted.

256 
WHUS42 KMFL 212000
CFWMFL

URGENT - IMMEDIATE BROADCAST REQUESTED
Coastal Hazard Message
National Weather Service Miami FL
400 PM EDT Sun Oct 21 2018

...HIGH RIP CURRENT RISK IN EFFECT FROM MONDAY MORNING THROUGH
TUESDAY EVENING...

.The National Weather Service in Miami has issued a High Rip
Current Risk, which is in effect from Monday morning through
Tuesday evening. 

FLZ168-172-173-220400-
/O.NEW.KMFL.RP.S.0034.181022T1000Z-181024T0000Z/
Coastal Palm Beach-Coastal Broward-Coastal Miami-Dade-
400 PM EDT Sun Oct 21 2018

...HIGH RIP CURRENT RISK IN EFFECT FROM MONDAY MORNING THROUGH
TUESDAY EVENING...

The National Weather Service in Miami has issued a High Rip
Current Risk, which is in effect from Monday morning through
Tuesday evening. 

* TIMING...Monday morning through Tuesday evening.

* IMPACTS...Life threatening rip currents will pose hazard to 
  swimmers. Heed the advice of lifeguards and swimming is not 
  advised. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

There is a high risk of rip currents.

Rip currents are powerful channels of water flowing quickly away
from shore, which occur most often at low spots or breaks in the
sandbar and in the vicinity of structures such as groins, jetties
and piers. Heed the advice of lifeguards, beach patrol flags and
signs.

Swim near a lifeguard. If caught in a rip current, relax and
float. Don't swim against the current. If able, swim in a
direction following the shoreline. If unable to escape, face the
shore and call or wave for help.

&&

$$


http://www.weather.gov/miami
6 follow-up statements
147 
WHUS42 KMFL 220708
CFWMFL

URGENT - IMMEDIATE BROADCAST REQUESTED
Coastal Hazard Message
National Weather Service Miami FL
308 AM EDT Mon Oct 22 2018

...HIGH RIP CURRENT RISK IN EFFECT FROM MONDAY MORNING THROUGH
TUESDAY EVENING...

.The National Weather Service in Miami has issued a High Rip
Current Risk, which is in effect from Monday morning through
Tuesday evening.

FLZ168-172-173-222200-
/O.CON.KMFL.RP.S.0034.181022T1000Z-181024T0000Z/
Coastal Palm Beach-Coastal Broward-Coastal Miami-Dade-
308 AM EDT Mon Oct 22 2018

...HIGH RIP CURRENT RISK REMAINS IN EFFECT THROUGH TUESDAY
EVENING...

* TIMING...Monday morning through Tuesday evening.

* IMPACTS...Life threatening rip currents will pose hazard to 
  swimmers. Heed the advice of lifeguards and swimming is not 
  advised. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

There is a high risk of rip currents.

Rip currents are powerful channels of water flowing quickly away
from shore, which occur most often at low spots or breaks in the
sandbar and in the vicinity of structures such as groins, jetties
and piers. Heed the advice of lifeguards, beach patrol flags and
signs.

Swim near a lifeguard. If caught in a rip current, relax and
float. Don't swim against the current. If able, swim in a
direction following the shoreline. If unable to escape, face the
shore and call or wave for help.

&&

$$


http://www.weather.gov/miami
421 
WHUS42 KMFL 222039
CFWMFL

URGENT - IMMEDIATE BROADCAST REQUESTED
Coastal Hazard Message
National Weather Service Miami FL
439 PM EDT Mon Oct 22 2018

...HIGH RIP CURRENT RISK REMAINS IN EFFECT THROUGH TUESDAY 
EVENING...

.The National Weather Service in Miami has issued a High Rip
Current Risk, which is in effect from Monday morning through
Tuesday evening.

FLZ168-172-173-230845-
/O.CON.KMFL.RP.S.0034.000000T0000Z-181024T0000Z/
Coastal Palm Beach-Coastal Broward-Coastal Miami-Dade-
439 PM EDT Mon Oct 22 2018

...HIGH RIP CURRENT RISK REMAINS IN EFFECT THROUGH TUESDAY
EVENING...

* TIMING...Through Tuesday evening.

* IMPACTS...Life threatening rip currents will pose hazard to 
  swimmers. Heed the advice of lifeguards and swimming is not 
  advised. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

There is a high risk of rip currents.

Rip currents are powerful channels of water flowing quickly away
from shore, which occur most often at low spots or breaks in the
sandbar and in the vicinity of structures such as groins, jetties
and piers. Heed the advice of lifeguards, beach patrol flags and
signs.

Swim near a lifeguard. If caught in a rip current, relax and
float. Don't swim against the current. If able, swim in a
direction following the shoreline. If unable to escape, face the
shore and call or wave for help.

&&

$$


http://www.weather.gov/miami
499 
WHUS42 KMFL 230905
CFWMFL

URGENT - IMMEDIATE BROADCAST REQUESTED
Coastal Hazard Message
National Weather Service Miami FL
505 AM EDT Tue Oct 23 2018

FLZ168-172-173-240000-
/O.CON.KMFL.RP.S.0034.000000T0000Z-181024T0000Z/
Coastal Palm Beach-Coastal Broward-Coastal Miami-Dade-
505 AM EDT Tue Oct 23 2018

...HIGH RIP CURRENT RISK REMAINS IN EFFECT THROUGH THIS EVENING...

* TIMING...Through this evening.

* IMPACTS...Life threatening rip currents will pose hazard to 
  swimmers. Heed the advice of lifeguards and swimming is not 
  advised. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

There is a high risk of rip currents.

Rip currents are powerful channels of water flowing quickly away
from shore, which occur most often at low spots or breaks in the
sandbar and in the vicinity of structures such as groins, jetties
and piers. Heed the advice of lifeguards, beach patrol flags and
signs.

Swim near a lifeguard. If caught in a rip current, relax and
float. Don't swim against the current. If able, swim in a
direction following the shoreline. If unable to escape, face the
shore and call or wave for help.

&&

$$


http://www.weather.gov/miami
714 
WHUS42 KMFL 231957
CFWMFL

URGENT - IMMEDIATE BROADCAST REQUESTED
Coastal Hazard Message
National Weather Service Miami FL
357 PM EDT Tue Oct 23 2018

FLZ172-173-232100-
/O.CAN.KMFL.RP.S.0034.000000T0000Z-181024T0000Z/
Coastal Broward-Coastal Miami-Dade-
357 PM EDT Tue Oct 23 2018

...HIGH RIP CURRENT RISK IS CANCELLED...

The National Weather Service in Miami has cancelled the High Rip
Current Risk. 

Moderate Rip Currents are still expected, so swimmers should
continue to exercise caution.

$$

FLZ168-240400-
/O.EXT.KMFL.RP.S.0034.000000T0000Z-181025T0000Z/
Coastal Palm Beach-
357 PM EDT Tue Oct 23 2018

...HIGH RIP CURRENT RISK NOW IN EFFECT THROUGH WEDNESDAY
EVENING...

* TIMING...Through this evening.

* IMPACTS...Life threatening rip currents will pose hazard to 
  swimmers. Heed the advice of lifeguards and swimming is not 
  advised. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

There is a high risk of rip currents.

Rip currents are powerful channels of water flowing quickly away
from shore, which occur most often at low spots or breaks in the
sandbar and in the vicinity of structures such as groins, jetties
and piers. Heed the advice of lifeguards, beach patrol flags and
signs.

Swim near a lifeguard. If caught in a rip current, relax and
float. Don't swim against the current. If able, swim in a
direction following the shoreline. If unable to escape, face the
shore and call or wave for help.

&&

$$


http://www.weather.gov/miami
036 
WHUS42 KMFL 240720
CFWMFL

URGENT - IMMEDIATE BROADCAST REQUESTED
Coastal Hazard Message
National Weather Service Miami FL
320 AM EDT Wed Oct 24 2018


FLZ168-241530-
/O.CON.KMFL.RP.S.0034.000000T0000Z-181025T0000Z/
Coastal Palm Beach-
320 AM EDT Wed Oct 24 2018

...HIGH RIP CURRENT RISK REMAINS IN EFFECT THROUGH THIS EVENING...

* TIMING...Through this evening.

* IMPACTS...Life threatening rip currents will pose hazard to 
  swimmers. Heed the advice of lifeguards and swimming is not 
  advised. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

There is a high risk of rip currents.

Rip currents are powerful channels of water flowing quickly away
from shore, which occur most often at low spots or breaks in the
sandbar and in the vicinity of structures such as groins, jetties
and piers. Heed the advice of lifeguards, beach patrol flags and
signs.

Swim near a lifeguard. If caught in a rip current, relax and
float. Don't swim against the current. If able, swim in a
direction following the shoreline. If unable to escape, face the
shore and call or wave for help.

&&

$$


http://www.weather.gov/miami
671 
WHUS42 KMFL 242331
CFWMFL

URGENT - IMMEDIATE BROADCAST REQUESTED
Coastal Hazard Message
National Weather Service Miami FL
731 PM EDT Wed Oct 24 2018

FLZ168-250045-
/O.CAN.KMFL.RP.S.0034.000000T0000Z-181025T0000Z/
Coastal Palm Beach-
731 PM EDT Wed Oct 24 2018

...HIGH RIP CURRENT RISK IS CANCELLED...

The National Weather Service in Miami has cancelled the High Rip
Current Risk. 

Moderate Rip Currents are still expected, so swimmers should
continue to exercise caution.

$$


http://www.weather.gov/miami

The office that day

Everything else NWS Miami, FL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 21, 3:33 AM EDTSmall Craft AdvisoryMFL40 hr

Nearby

Rip Current Statements in Florida, 2018Every rip current statement in 2018

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.